- 期刊
- OpenAccess
Improvement in Oil Extraction from Microalgae/Algae for Biodiesel Production using Microwave Assisted Oil Extraction with Methyl Ester
並列摘要
The prospects of producing carbon-neutral biofuels from microalgae appear bright because of their unique features such as high CO_2-sequestering capability and ability to grow in wastewater/seawater/brackish water and high-lipid productivity. Extraction of lipids from microalgae/algae is still considered a challenging process due to the difficulties faced during extraction. The commercial production of microalgae biofuels including biodiesel is still not feasible due to the low biomass concentration and costly downstream processes. This study reports the solvent effectiveness of methyl ester (biodiesel) for microalgal lipid extraction together with microwave irradiation. Two co-solvent systems, BD20 (20% Methyl Ester and 80% Ethanol) and BD40 (40% Methyl Ester and 60% Ethanol) were experimented at time intervals of 5, 10 and 15 min, by Microwave-Assisted Extraction at 100 Watts. Microwave irradiation led to disruption of the algal cell walls which facilitated lipid extraction. Results were compared to another system, Chloroform 33% and Ethanol 67% by Microwave-Assisted Extraction as well as conventional Soxhlet extraction as the control. The results obtained from the experiment shows that BD40 has the highest lipid yield for all time intervals compared to BD20, Chloroform + Ethanol. When compared to the control, all of the samples that were extracted with the microwave had a higher lipid yield than Soxhlet Extraction.
延伸閱讀
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